使用夏普GP2Y1010AU0F灰尘传感器检测空气质量..

使用夏普使用夏普 GP2Y1010AU0F 灰尘传感器检测空气质量灰尘传感器检测空气质量 夏普灰尘传感器价格较便宜 能检测出室内空气中的灰尘和烟尘含量 检测原理 其原理如下图 传感器中心有个洞可以让空气自由流过 定向发射 LED 光 通过检测经过空气中灰尘折 射过后的光线来判断灰尘的含量 电路图 因为数据是通过 pin 5 的电压模拟信号输出的 而树莓派的引脚不支持模拟信号直接读取 需要增加数模 转换芯片 所以先用 Arduino 来实验 Arduino 代码 根据电路图 把 Arduino 和传感器连接起来 1 Sharp pin 1 V LED 5V 串联 1 个 150 欧姆的电阻 最好在电阻一侧和 GND 之间再串联一个 220uf 的电容 2 Sharp pin 2 LED GND GND 3 Sharp pin 3 LED Arduino PIN 2 开关 LED 4 Sharp pin 4 S GND GND 5 Sharp pin 5 Vo Arduino A0 pin 空气质量数据通过电压模拟信号输出 6 Sharp pin 6 Vcc 5V 1 2 Interface to Sharp GP2Y1010AU0F Particle Sensor 3 Program by Christopher Nafis 4 Written April 2012 5 6 7 8 9 Sharp pin 1 V LED 5V connected to 150ohm resister 10 Sharp pin 2 LED GND Arduino GND pin 11 Sharp pin 3 LED Arduino pin 2 12 Sharp pin 4 S GND Arduino GND pin 13 Sharp pin 5 Vo Arduino A0 pin 14 Sharp pin 6 Vcc 5V 15 16 include 17 include 18 19 intdustPin 0 20 intledPower 2 21 intdelayTime 280 22 intdelayTime2 40 23 floatoffTime 9680 24 25 intdustVal 0 26 inti 0 27 floatppm 0 28 char s 32 29 floatvoltage 0 30 floatdustdensity 0 31 floatppmpercf 0 32 33 voidsetup 34 Serial begin 9600 35 pinMode ledPower OUTPUT 36 37 give the ethernet module time to boot up 38 delay 1000 39 40 i 0 41 ppm 0 42 43 44 voidloop 45 i i 1 46 digitalWrite ledPower LOW power on the LED 47 delayMicroseconds delayTime 48 dustVal analogRead dustPin read the dust value 49 ppm ppm dustVal 50 delayMicroseconds delayTime2 51 digitalWrite ledPower HIGH turn the LED off 52 delayMicroseconds offTime 53 54 voltage ppm i 0 0049 55 dustdensity 0 17 voltage 0 1 56 ppmpercf voltage 0 0256 57 if ppmpercf 0 58 ppmpercf 0 59 if dustdensity0 5 62 dustdensity 0 5 63 StringdataString 64 dataString dtostrf voltage 9 4 s 65 dataString 66 dataString dtostrf dustdensity 5 2 s 67 dataString 68 dataString dtostrf ppmpercf 8 0 s 69 i 0 70 ppm 0 71 Serial println dataS